Geared gyratory crushers



April 29, 1958 J. E. KENNEDY 2,832,547

GEARED GYRATORY- CRUSHERS Filed April 5, 1954 2 sheets-sheet 1 37 22 ZW25 21 M 25 20 /f/ l! 24 HO, l J V ,'l 17 `L /Jl 1116 1 M ,'{o 1a jf \j5f7 fx 12 4 f.

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5 59 s4 a6 77 BY 33 35 /dybl April 29, 1958 J. E. KENNEDY GEAREDGYRATORY CRUSHERS 2 Sheets-Sheet 2 Filed April 5, 1954 INVENToR. f/zdgBY v Hmmm??? United States Patent O GEARED GYRATORY CRUSHERS Joseph E.Kennedy, New York, N. Y.

Application April 5, 1954, Serial No. 420,941

3 Claims. (Cl. 241-209) This invention relates to gyratory Crushers andparticularly to Crushers of this type wherein the eccentric is rotatedfrom a source of power through a meshing gear and pinion and known as ageared gyratory Crusher.

An object of the present invention is to rigidly sup port the eccentricby the frame of the Crusher and prevent undue vibration ofthe eccentric.

It is another object of the invention to provide a rigid support in theCrusher frame for a counter shaft con necting the eccentric to a sourceof power.

It is another object of the invention to provide a lubricant chamber inthe portion of the Crusher frame supporting the eccentric and countershaft.

Another object of the invention is to provide a crushed materialdischarge opening in a bottom wall of the Crusher frame and a chutesupported by said bottom wall and lubricant chamber.

Other objects and advantages of the invention will be describedhereinafter.

The drawings accompanying and forming a part of this applicationcomprises:

Figure l showing a longitudinal-sectional view of the crusher; l

Figure 2 showing a top View, on an enlarged scale,

`of the spider of the Crusher; and

Figure 3 is a sectional view taken on the line 3--3 of LFigure 2 lookingin the direction of the arrows of an :arm ofthe spider.

The embodiment of the invention includes a hollow crusher framecomprising an upper frame member 4 and :a lower frame member 5 supportedon a suitable founfdation, not shown. The upper end of the lower framemem-ber is arranged with an annular flange 6 and an :annular seat lforming a shoulder at the inner circum ference of the ange to engage andsupport a corresponding annular recess at the lower end of the upperframe member 4, as shown at 8 in Figure l. The lower end of the upperframe member 4 is provided with an annular depending portion 9 to fitwithin the seat 7 and an annular ange 1i) to extend parallel wit-h theflange 6. Both flanges 6 and 10 have a plurality of aligned openings forthe engagement of bolts 11 to secure together the upper and lower framemembers.

The upper frame member tapers from the top to the bottom and islongitudinally split and arranged with a flange 12 at each split edgeand the flanges 12 are provided with aligned openings 13 for theengagement of bolts for drawing the upper frame 4member around acrushing concave mounted in said upper frame member. The crushingconcave comprises a plurality of tapering annular sections 14 with eachsection secured to the upper frame member by zinc, as indicated at 15,and the zinc of the topl crushing concave section having an anchoringprojection 16 into the upper frame member, as shown in Figure l.

The upper end of the upper frame member 4 is arranged with an annularflange 17 provided with an annu- ICC lar seat in the upper face for theengagement and support of a corresponding ridge in the underface of arim 18 of a spider, as shown at 19 in Figure l. The flange 17 and rim 18are provided with aligned openings for the engagement of a plurality ofbolts to secure the spider to the upper frame member, as shown at 20.

The spider member also includes two arms 21 extending inwardly fromdiametrically opposite portions of the rim 18 to diametrica-lly oppositeportions of a hub portion 22. The arms 21 are of H-shape in crosssection,

as shown in Figure 3, to reduce the weight of the spiden The material tobe crushed is fed into the upper frameV member through the spacesbetween the spider arms; and to protect the arms from damage by thematerial being fed into the crusher, plates 23 are secured in the upperhollow spaces of the arms by bolts 24, asshown in Figure 1. The hubportion 22 is provided with three annular internal seats 25, 26 and 27,as shown in Figure l. Anannular bearing or bushing 28 is engaged` on theannular seat 26 to occupy the inner portion of the hub between the seats25 and 26 and provide a bear# ing surface for a gyratory shaft. i

The gyratory shaft is provided with a straight wall upper end portion 29having screw threads `3() at the upper extremity, a conical intermediateportion 31 and a straight wall lower end portion 32, as shown in Figurel. The straight upper end portion 29 is fitted with a bearing sleeve 33tapering from the bottom to the top to permit gyratory movement of thegyratory `shaft within the bearing 28. The bottom of the bearing sleeve33 is supported by a bearing ring 34 fitted in the hub seat 27. The topportion of the bearing sleeve 33 is extended above the bearing 28 andscrewed on the screw threads 30 to support the gyratory shaft on thebearing ring 34, as shown in Figure l. The bearing sleeve 33 is lockedon the gyratory shaft by a self-tightening locknut comprising a bodyportion 35 screwed on the screw threads 30 and having a downwardlytapering outer wall and a horizontally split annular portion 36 at theupper end of the body portion 35 and of larger diameter than the screwthreaded end 30 of the gyratory shaft. The lock-nut is made self-lockingby a conical or tapering annular member 37 encircling the nut body 35with the lower end abutting the upper end of the bearing sleeves 33 andthe upper end connected` to the nut body 35 by a ring 38 secured to theupperend of the member 37 and having a lateral extension extended in thespace between the nut body 35 and split portion 36 and secured to thenut body 35, as shown at 39 in Figure l. Undue upward movement of thesplit portion 36 is limited by a perforated cap plate 40 secured to thetop of the hub portion 22. Dust and dirt are prevented from accumulatingon the plate 40 and in the hub portion 22 by a dust cap 41 mounted onthe plate 40 with an angular sealing joint 42 between the cap 41 andplate 40, as shown in Figure 1.

The conical shaft portion 31 is provided with a crushing head comprisinga conical core 43 having spaced annular grooves 44 in the wall of thebore to form a gripping surface to retain the core on the conicalportion 31 and reduce the Weight of the head, and a plurality ofannular-conical crushing members 45 secured on the core 43 by pouredzinc 46. To increase the bond between the core 43 and the crushingmembers 45, the portion of the core adjacent the joint betweenthecrushing members 45 is provided with an annular ridge 47 extendinginto the zinc 46, as sho-wn in Figure 1. The crushing head is retainedon the conical shaft portion by a nut 48 engaged in an annular recess 49in the top of the upper crushing member 45 and screwed on a ring 50wedged onto the conical shaft portion 31 by a clampingA` Patented Apr.29, 1958` collar 51abutting an annular ridge 52 formed on the gyratoryshaft between the upper shaft end portion 29 and the conical shaftportion 31, as shown in Figure l.

The crushing concave sections 14 and the crushing me-mbers 45 formaicrushing chamber tapering downward from a wide entrance end at the topto a narrow outlet end at the bottom, as shown in Figure l.

The lower frame member is arranged to eccentrically support the lowershaft end portion 32 and rigidly support driving means. This isaccomplished by providing said lower frame member 5 with a bottomhorizontal wall 53 having an integral bearing sleeve 5ft in the centerof said bottom wall and extending from the opposite faces of the vbottomwall, as shown in Figure l. The lower portion of the bearing sleeve 54below the bottom wall 53 is arranged with an enlarged depending member55 forming an annular rim 56 with a horizontal-tubular housing 57 formedintegral with the underface of the bottom wall 53 in spaced relation toone side of the bearing sleeve 54. The opening formed by the rim 56 isclosed by a closure plate 58 removably secured to said rim, as shown inFigure l. A chamber 59 is formed by the enlarged depending portion 55,the tubular housing 57 and the closure plate 58. The lower frame member5 is arranged with four radial ribs 6u between the outlet of thecrushing chamber and the bottom wall 53 to support a wear-resistingshelf 61 to receive crushed material from the crushing chamber outletand guide said crushed material to a crushed material discharge opening62 in the portion of the bottom wall on the side of the sleeve bearing54 opposite the side arranged with the tubular housing 57. To preventthe crushed material from damaging the enlarged depending member 5S andprovide a chute, a plate 63 is provided with a tongue at one end engagedin a groove in the bottom wall 53 adjacent the opening 62 to secure theplate to the bottom wall 53, as shown at 64 in Figure l, and theopposite end of the plate 63 resting on a shoulder of the enlargeddepending member 55.

The bearing sleeve 54 eccentrically supports the gyratory shaft by aneccentric comprising a cup-shaped member 65 rotatable in the bearingsleeve 54 with the closed end portion of the member 65 extending belowthe bearing sleeve 54 and into the chamber 59 with the closed endrotatably supported by an annular ball bearing race 66 on the interiorof the closure plate 58. To reduce friction between the cup-shapedmember 65 with the bearing sleeve 54, the portion of the interior of thebearing sleeve occupied by the cup-shaped member is provided with abearing lining 67. The interior of the cup-shaped member 65 is providedwith an annular eccentric socket portion 68 for the engagement of anannular bail member 69 releasably mounted by a pin 7o on a sleeve 7iengaged on the lower shaft end portion 32, as shown in Figure l. rTherotation of the cup-shaped member 65 will gyrate the shaft 2932 andcrushing head 435-45 through the eccentric socket portion 68 and ballmember 69.

The cup-shaped member is rotated from a suitable source of power, suchas an electric motor, not shown, through a pulley 72 keyed to an endportion of a counter shaft 73 rotatably supported at an end projectingfrom the pulley by a bearing 74 mounted exteriorly of the crusher. Agreater portion of the shaft 73 is rotatably supported by bearings 75mounted in the opposite ends of a bearing cylinder 76 removably securedin the tubular housing 57. An end portion of the shaft 73 extending intothe chamber 59 is provided with a beveled pinion 77 keyed to said endportion of the shaft and meshing with an annular beveled gear 78 lzeyedto the closed end portion of the cup-shaped member 65 within the chamber59. The removable mounting of the bearing cylinder 76 permits readyreplacement of the shaft 73 and pinion 77 and the gear 73 is readilyreplaced by the Aremoval of the closure plate 58, whereby the drivingmechanism can be replaced without dismantling the entire crusher.

The bottom wall 53 and the integral bearing sleeve 54 and tubularhousing 57 provide a rigid mounting for the eccentric 65--71 and drivemechanism 7L-78.

The bearing cylinder 76 is sealed at the ends by glands 79 to form alubricant chamber Sti having a lubricant inlet 81 and sediment outlet82,

The eccentric mounting 65w7, pinion '77 and gear 78 are forcedlubricated from a lubricating pump, not shown, connected to a pipe S3rotatably mounted in a bushing Se mounted in the closure plate The endof the pipe S3 is extended through the closed end of the cupshapedmember 65 whereby the lubricant llows in the direction of the arrows upthe shaft portion 32 and the sleeve 71, down the cup-shaped member 65and the bearing sleeve 54, between the pinion 7'7 and gear 78 andthrough the ball bearing race 66 to a return pipe 85 in the closureplate 58.

To prevent dust and fragments of the crushed material from entering thebearing sleeve 54 and damaging the eccentric mounting, there is provideda dust seal comprising an annular channel member 56 mounted on a flange87 at the upper end of the bearing sleeve 54. The channel member ispartially filled with a liquid, such as water or oil, as shown at 8S inFigure l, and an annular plate S9 having a flanged upper end secured tothe lower end of the crushing head core 43 is extended into the liquidin spaced relation to the walls of the channel member 86, as shown inFigure l. The wall 89 is near the outer wall of the channel member andthe upper portion of the inner wall of the channel member is offsetoutwardly toward the gyratory shaft to effect a better sealing of thebearing sleeve 54, as shown at 90 in Figure l. The channel member S6 isprovided with drainage means in the form ot an outwardly extendingpocket 91 having an outlet 92 arranged with a nipple 93 for connectionof a hose, not sho-wn, for circulation of the sealing liquid through alter and pump, not shown,

so that any deposits of dust in the channel member 86 can be flushedout. This prevents formation of a cake of sealing liquid and dust.

Having thus described my invention, i claim:

l. A gyratory crusher including a hollow frame supported in uprightposition, a spider mounted on the upper end of the frame and having abearing in the center thereof, a crushing concave mounted in the upperportion of the frame, a tubular eccentric mounted in the lower por tionof the frame, a gyratory shaft supported at the opposite end portions inthe spider bearing and the eccentric,

and a crushing head secured to an intermediate portion.

of the gyratory shaft to form a crushing Chamber with the crushingconcave, the improvement being in the hollow frame and comprising anupper frame .member supporting the spider and the crushing concave, anda lower rame member supporting the upper frame member and having ahorizontal wall at the bottom edge of the lower frame member closing thebottom portion of the lower frame member and arranged with a dischargeopening on one side of the vertical axis oi the lower frame member, abearing sleeve integral with the bottom wall and extending from theopposite faces of said bottom wall to form a bearing for the eccentricwith the lower portion ot the eccentric extending below1 the bearingsleeve, a horizontal tubular housing on the underface of the bottom walland at one side of the lower portion of the bearing sleeve opposite thedischarge opening in the horizontal wall and positioned entirely outsidethe lower frame member, and a counter shaft rotatably supported in thetubular housing in a horizontal plane below the bottom edge of the lowerframe member and having one end extending exteriorly of the housing andoperatively connected to a source of power and the opposite endoperatively connected to the lower portion of the eccentric.

2. A gyratory Crusher as claimed in claim 1 wherein the bearing sleeveis arranged with an enlarged depending member having a shoulder andpositioned entirely out of the lower frame member, and a plate securedat one end to the horizontal wall adjacent the discharge opening and theopposite end resting on the shoulder of the enlarged depending member toform a chute for the crushed material with a substantial portionpositioned out of the lower frame member.

3. A gyratory Crusher as claimed in claim 1, wherein the eccentric iscup-shaped with the closed bottom extending below the bearing sleeve,the lower portion of the bearing sleeve is arranged with an enlargeddepending member forming a rim with the tubular housing, a closure platesecured to the rim to form a chamber below and around the lower portionof the bearing sleeve, a conduit 15 References Cited in the file of thispatent UNITED STATES PATENTS Gates Sept. 4, 1894 Carman et al. Sept. 4,1894 Lowry Ian. 8, 1895 Traylor e Dec. 17, 1912 Bernhard Apr. 6, 1920Newhouse Nov. 4, 1924 Jacobson Sept. 15, 1936 Traylor Oct. 18, 1949Shafter Nov. 29, 1949 FOREIGN PATENTS France Oct. 30, 1920 Great BritainOct. 25, 1949 France Sept. 18, 1939

